<template>
  <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import echarts from "echarts";
require("echarts/theme/macarons"); // echarts theme
import resize from "./mixins/resize";

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: "chart",
    },
    width: {
      type: String,
      default: "100%",
    },
    height: {
      type: String,
      default: "300px",
    },
    chartData: {
      type: Object,
      required: true,
    },
  },
  data() {
    return {
      chart: null,
    };
  },

  watch: {
    chartData: {
      deep: true,
      handler(val) {
        this.setOptions(val);
      },
    },
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart();
    });
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, "macarons");
      this.setOptions(this.chartData);
    },
    setOptions({ xData, pieData, name } = {}) {
      this.chart.setOption(
        {
          tooltip: {
            trigger: "item",
            formatter: "{a} <br/>{b} : {c} ({d}%)",
          },
          legend: {
            left: "center",
            bottom: "0",
            data: xData,
          },
          series: [
            {
              name: "",
              type: "pie",
              radius: "55%",
              center: ["50%", "38%"],
              data: pieData,
              emphasis: {
                itemStyle: {
                  shadowBlur: 10,
                  shadowOffsetX: 0,
                  shadowColor: "rgba(0, 0, 0, 0.5)",
                },
              },
              labelLine: {
                lineStyle: {
                  type: "dotted", // 虚线
                },
              },
              label: {
                normal: {
                  position: "outer",
                },
              },
            },
            {
              name: "",
              type: "pie",
              radius: "55%",
              center: ["50%", "38%"],
              data: pieData,
              emphasis: {
                itemStyle: {
                  shadowBlur: 10,
                  shadowOffsetX: 0,
                  shadowColor: "rgba(0, 0, 0, 0.5)",
                },
              },
              labelLine: {
                lineStyle: {
                  type: "dotted", // 虚线
                },
              },
              label: {
                normal: {
                  show: true,
                  position: "inner",
                  fontSize: 12,
                  fontWeight: "bold",
                  align: "left",
                  formatter: function (p) {
                    //指示线对应文字,百分比
                    return p.percent.toFixed(2) + "%"; //设置百分比保留几位小数
                  },
                },
              },
            },
          ],
        },
        { notMerge: true }
      );
    },
  },
};
</script>
